Swift's Lastest Gamma Ray Burst Detections
Older Bursts
- July 23, 2008 GRB080723
TITLE: GCN CIRCULAR
NUMBER: 8000
SUBJECT: GRB 080723: Swift detection of a burst
DATE: 08/07/23 04:40:07 GMT
FROM: David Palmer at LANL
M. Stamatikos (NASA/ORAU), W. H. Baumgartner (GSFC/UMBC),
A. P. Beardmore (U Leicester), S. T. Holland (CRESST/USRA/GSFC),
S. D. Hunsberger (PSU), H. A. Krimm (CRESST/GSFC/USRA),
C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC),
K. L. Page (U Leicester), D. M. Palmer (LANL) and
T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 04:19:24 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080723 (trigger=317662). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 274.512, -6.923 which is
RA(J2000) = 18h 18m 03s
Dec(J2000) = -06d 55' 20"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). Because the BAT light curve has not been
received, we cannot comment on the burst profile at this time. However,
there is a strong 8.4 sigma excess detected in the scaled map image,
which strongly suggests a real gamma-ray burst occurred.
- + Read more
- July 21, 2008 GRB080721
TITLE: GCN CIRCULAR
NUMBER: 7988
SUBJECT: GRB 080721: Swift detection of a burst with a bright optical counterpart.
DATE: 08/07/21 10:42:45 GMT
FROM: David Palmer at LANL
F. E. Marshall (NASA/GSFC), A. P. Beardmore (U Leicester),
D. N. Burrows (PSU), P. A. Evans (U Leicester),
N. Gehrels (NASA/GSFC), C. Gronwall (PSU), C. Guidorzi (INAF-OAB),
S. T. Holland (CRESST/USRA/GSFC), V. Mangano (INAF-IASFPA),
P. T. O'Brien (U Leicester), J. P. Osborne (U Leicester),
K. L. Page (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), M. Perri (ASDC), B. Preger (ASDC),
P. Romano (INAF-IASFPA), M. Stamatikos (NASA/ORAU),
R. L. C. Starling (U Leicester), T. N. Ukwatta (GSFC/GWU),
P. A. Ward (MSSL-UCL) and H. Ziaeepour (UCL-MSSL) report on behalf of
the Swift Team:
At 10:25:16 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080721 (trigger=317508). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 224.471, -11.712 which is
RA(J2000) = 14h 57m 53s
Dec(J2000) = -11d 42' 43"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed at least 4 peaks
structure with a duration of about 35 sec. The peak count rate
was ~19k counts/sec (15-350 keV), at ~0 sec after the trigger,
during the second peak.
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- July 14, 2008 GRB080714
TITLE: GCN CIRCULAR
NUMBER: 7978
SUBJECT: GRB 080714: Swift detection of a burst
DATE: 08/07/14 18:11:28 GMT
FROM: David Palmer at LANL
M. Perri (ASDC), S. D. Barthelmy (GSFC), J. R. Cummings (NASA/UMBC),
N. Gehrels (NASA/GSFC), S. T. Holland (CRESST/USRA/GSFC),
E. A. Hoversten (PSU), J. A. Kennea (PSU),
H. A. Krimm (CRESST/GSFC/USRA), V. Mangano (INAF-IASFPA),
F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester),
J. P. Osborne (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), B. Preger (ASDC), P. Schady (MSSL-UCL),
M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester),
G. Stratta (ASDC), M. C. Stroh (PSU), D. E. Vanden Berk (PSU) and
L. Vetere (PSU) report on behalf of the Swift Team:
At 17:52:56 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080714 (trigger=316910). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 188.109, -60.279 which is
RA(J2000) = 12h 32m 26s
Dec(J2000) = -60d 16' 42"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single-peaked
structure with a duration of about 40 sec. The peak count rate
was ~5000 counts/sec (15-350 keV), at ~1 sec after the trigger.
- + Read more
- July 10, 2008 GRB080710
TITLE: GCN CIRCULAR
NUMBER: 7957
SUBJECT: GRB 080710: Swift detection of a burst
DATE: 08/07/10 07:29:01 GMT
FROM: Boris Sbarufatti at INAF-IASF-Pa
B. Sbarufatti (INAF-IASFPA), W. H. Baumgartner (GSFC/UMBC),
P. A. Evans (U Leicester), C. Guidorzi (INAF-OAB),
E. A. Hoversten (PSU), V. La Parola (INAF-IASFPA),
V. Mangano (INAF-IASFPA), C. B. Markwardt (CRESST/GSFC/UMD),
K. L. Page (U Leicester), P. Romano (INAF-IASFPA) and
T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 07:13:10 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080710 (trigger=316534). The BAT on-board calculated location is
RA, Dec 8.257, +19.492 which is
RA(J2000) = 00h 33m 02s
Dec(J2000) = +19d 29' 31"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single-peaked
structure with a duration of about 20 sec. The peak count rate
was ~1,000 counts/sec (15-350 keV), at 0 sec after the trigger.
- + Read more
- July 7, 2008 GRB080707
TITLE: GCN CIRCULAR
NUMBER: 7947
SUBJECT: GRB 080707: Swift detection of a burst
DATE: 08/07/07 08:47:33 GMT
FROM: David Palmer at LANL
P. Schady (MSSL-UCL), W. H. Baumgartner (GSFC/UMBC),
A. P. Beardmore (U Leicester), A. A. Breeveld (MSSL),
P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC),
C. Guidorzi (INAF-OAB), H. A. Krimm (CRESST/GSFC/USRA),
C. B. Markwardt (CRESST/GSFC/UMD), A. Moretti (INAF-OAB),
P. T. O'Brien (U Leicester), C. Pagani (PSU),
K. L. Page (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), R. L. C. Starling (U Leicester) and
H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team:
At 08:27:53 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080707 (trigger=316204). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 32.632, +33.103 which is
RA(J2000) = 02h 10m 32s
Dec(J2000) = +33d 06' 11"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a double-peaked
structure with a duration of about 40 sec. The peak count rate
was ~3000 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- July 3, 2008 GRB080703
TITLE: GCN CIRCULAR
NUMBER: 7936
SUBJECT: GRB 080703: Swift detection of a burst with optical afterglow
DATE: 08/07/03 19:17:07 GMT
FROM: David Palmer at LANL
H. Ziaeepour (UCL-MSSL), S. D. Barthelmy (GSFC), M. M. Chester (PSU),
J. R. Cummings (NASA/UMBC), P. A. Evans (U Leicester),
N. Gehrels (NASA/GSFC), O. Godet (U Leicester),
H. A. Krimm (CRESST/GSFC/USRA), C. B. Markwardt (CRESST/GSFC/UMD),
F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester),
C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), P. Schady (MSSL-UCL),
R. L. C. Starling (U Leicester), M. C. Stroh (PSU),
T. N. Ukwatta (GSFC/GWU), D. E. Vanden Berk (PSU) and
P. A. Ward (MSSL-UCL) report on behalf of the Swift Team:
At 19:00:13 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080703 (trigger=315819). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 101.867, -63.222 which is
RA(J2000) = 06h 47m 28s
Dec(J2000) = -63d 13' 19"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows a single peak
with a duration of about 5 sec. The peak count rate
was ~1500 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- July 2, 2008 GRB080702b
TITLE: GCN CIRCULAR
NUMBER: 7924
SUBJECT: GRB 080702B : Burst detected in BAT during Swift slew
DATE: 08/07/02 20:18:23 GMT
FROM: Jay R. Cummings at NASA/GSFC/Swift
Jay R. Cummings (NASA/UMBC), A. Copete (Harvard),
J. Grindlay (Harvard), D. Palmer (LANL),
for the Swift-BAT and BATSS teams
At 01:10:41, Swift-BAT observed GRB 080702B. The burst occurred
during a preplanned Swift slew maneuver. The rate increase was
noted during a routine check of the counting rates for missed out-
of-field and slew bursts. A GRB candidate was automatically
detected by the BAT Slew Survey (BATSS) with 5.9 sigma in the
S band (15-50 keV) and 6.5 sigma in the B band (15-150keV).
The burst profile is FRED-like with ~3sec rise and ~30sec decay.
The peak count rate is 0.05cts/sec (S band) and 0.04cts/sec (B band).
BATSS automated analysis measured T90 = 10.5sec and T50 = 5.5sec,
and a position
RA = 23h 42m 24s, DEC = -05d 29' 23"
with a 90% confidence radius of 6.4arcmin.
- + Read more
- July 2, 2008 GRB080702a
TITLE: GCN CIRCULAR
NUMBER: 7920
SUBJECT: GRB 080702: Swift detection of a short burst
DATE: 08/07/02 12:10:31 GMT
FROM: David Palmer at LANL
M. De Pasquale (UCL-MSSL), W. H. Baumgartner (GSFC/UMBC),
A. P. Beardmore (U Leicester), D. N. Burrows (PSU),
P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC),
C. Guidorzi (INAF-OAB), J. A. Kennea (PSU), V. Mangano (INAF-IASFPA),
F. E. Marshall (NASA/GSFC), C. Pagani (PSU), K. L. Page (U Leicester),
D. M. Palmer (LANL), P. Romano (INAF-IASFPA), T. Sakamoto (NASA/UMBC),
B. Sbarufatti (INAF-IASFPA), P. Schady (MSSL-UCL),
M. Stamatikos (NASA/ORAU), E. Troja (INAF-IASFPA),
T. N. Ukwatta (GSFC/GWU) and P. A. Ward (MSSL-UCL) report on behalf
of the Swift Team:
At 11:50:43 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080702 (trigger=315710). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 312.853, +72.308 which is
RA(J2000) = 20h 51m 25s
Dec(J2000) = +72d 18' 28"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a double-peaked
structure with the second peak larger and a total duration of
about 1.5 sec. The peak count rate was ~3000 counts/sec (15-350 keV),
at ~0.5 sec after the trigger, during the second peak.
- + Read more
- July 1, 2008 GRB080701
TITLE: GCN CIRCULAR
NUMBER: 7910
SUBJECT: GRB 080701: Swift detection of a burst
DATE: 08/07/01 10:37:05 GMT
FROM: David Palmer at LANL
M. C. Stroh (PSU), A. P. Beardmore (U Leicester), D. N. Burrows (PSU),
P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC),
C. Guidorzi (INAF-OAB), E. A. Hoversten (PSU), C. Pagani (PSU),
K. L. Page (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), P. Romano (INAF-IASFPA),
T. Sakamoto (NASA/UMBC), R. L. C. Starling (U Leicester),
T. N. Ukwatta (GSFC/GWU), L. Vetere (PSU) and H. Ziaeepour (UCL-MSSL)
report on behalf of the Swift Team:
At 10:13:37 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080701 (trigger=315615). Swift did not immediately slew
due to an Earth limb constraint. The BAT on-board calculated location is
RA, Dec 45.837, +75.492 which is
RA(J2000) = 03h 03m 21s
Dec(J2000) = +75d 29' 30"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a smooth peak
structure with a duration of ~15 sec. The peak count rate
was ~2500 counts/sec (15-350 keV), at ~1 sec after the trigger.
- + Read more
- June 23, 2008 GRB080623
TITLE: GCN CIRCULAR
NUMBER: 7894
SUBJECT: GRB 080623: Swift detection of a burst
DATE: 08/06/23 10:43:00 GMT
FROM: David Palmer at LANL
T. N. Ukwatta (GSFC/GWU), S. D. Barthelmy (GSFC),
A. P. Beardmore (U Leicester), P. A. Evans (U Leicester),
N. Gehrels (NASA/GSFC), O. Godet (U Leicester),
S. T. Holland (CRESST/USRA/GSFC), S. D. Hunsberger (PSU),
J. A. Kennea (PSU), A. Moretti (INAF-OAB), K. L. Page (U Leicester),
D. M. Palmer (LANL), D. Perez (U Leicester), M. Perri (ASDC) and
G. Stratta (ASDC) report on behalf of the Swift Team:
At 10:25:28 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080623 (trigger=315080). Swift did not immediately slew
because of an Earth observing constraint.
The BAT on-board calculated location is
RA, Dec 237.660, -62.038, which is
RA(J2000) = 15h 50m 38s
Dec(J2000) = -62d 02' 16"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showes several overlapping peaks
with a duration of about 25 sec. The peak count rate
was ~2500 counts/sec (15-350 keV), at ~7 sec after the trigger.
- + Read more
- June 13, 2008 GRB080613b
TITLE: GCN CIRCULAR
NUMBER: 7873
SUBJECT: GRB 080613B: Swift detection of a burst
DATE: 08/06/13 11:27:48 GMT
FROM: Scott Barthelmy at NASA/GSFC
C. B. Markwardt (CRESST/GSFC/UMD), S. D. Barthelmy (GSFC),
W. H. Baumgartner (GSFC/UMBC), G. Cusumano (INAF-IASFPA),
C. Gronwall (PSU), C. Guidorzi (INAF-OAB),
S. T. Holland (CRESST/USRA/GSFC), J. Mao (INAF-OAB),
F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester),
J. P. Osborne (U Leicester), K. L. Page (U Leicester),
M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester),
G. Tagliaferri (INAF-OAB) and H. Ziaeepour (UCL-MSSL) report on
behalf of the Swift Team:
At 11:12:37 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080613B (trigger=313954). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 173.797, -7.098 which is
RA(J2000) = 11h 35m 11s
Dec(J2000) = -07d 05' 53"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows multiple overlapping
peaks with a duration of about 50 sec. The peak count rate
was ~10000 counts/sec (15-350 keV), at ~T+0 sec after the trigger.
- + Read more
- June 7, 2008 GRB080607
TITLE: GCN CIRCULAR
NUMBER: 7847
SUBJECT: GRB 080607: Swift detection of a burst with optical afterglow
DATE: 08/06/07 06:21:44 GMT
FROM: Vanessa Mangano at INAF-IASFPA
V. Mangano (INAF-IASFPA), J. R. Cummings (NASA/UMBC),
G. Cusumano (INAF-IASFPA), N. Gehrels (NASA/GSFC),
V. La Parola (INAF-IASFPA), C. B. Markwardt (CRESST/GSFC/UMD),
J. P. Osborne (U Leicester), B. Sbarufatti (INAF-IASFPA) and
D. E. Vanden Berk (PSU) report on behalf of the Swift Team:
At 06:07:27 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080607 (trigger=313417). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 194.967, +15.900 which is
RA(J2000) = 12h 59m 52s
Dec(J2000) = +15d 54' 01"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a multi-peak
structure with a duration of about 80 sec. The peak count rate
was ~35000 counts/sec (15-350 keV), at ~2 sec after the trigger.
- + Read more
- June 5, 2008 GRB080605
TITLE: GCN CIRCULAR
NUMBER: 7828
SUBJECT: GRB 080605: Swift detection of a burst with an optical afterglow
DATE: 08/06/06 00:13:48 GMT
FROM: David Palmer at LANL
B. Sbarufatti (INAF-IASFPA), S. D. Barthelmy (GSFC),
D. N. Burrows (PSU), N. Gehrels (NASA/GSFC),
S. T. Holland (CRESST/USRA/GSFC), V. La Parola (INAF-IASFPA),
V. Mangano (INAF-IASFPA), C. B. Markwardt (CRESST/GSFC/UMD),
D. M. Palmer (LANL), A. M. Parsons (GSFC), T. Sakamoto (NASA/UMBC),
T. N. Ukwatta (GSFC/GWU) and D. E. Vanden Berk (PSU) report on behalf
of the Swift Team:
At 23:47:57 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080605 (trigger=313299). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 262.127, +4.002 which is
RA(J2000) = 17h 28m 31s
Dec(J2000) = +04d 00' 06"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows multiple overlapping
peaks lasting at least to T+8 sec (at which the TDRSS lightcurve is
truncated). The peak count rate was ~17000 counts/sec (15-350 keV),
at ~1 sec after the trigger.
- + Read more
- June 4, 2008 GRB080604
TITLE: GCN CIRCULAR
NUMBER: 7800
SUBJECT: GRB 080604: Swift detection of a burst with an optical afterglow
DATE: 08/06/04 07:38:24 GMT
FROM: David Palmer at LANL
V. La Parola (INAF-IASFPA), P. A. Evans (U Leicester),
N. Gehrels (NASA/GSFC), C. Guidorzi (INAF-OAB),
S. T. Holland (CRESST/USRA/GSFC), N. P. M. Kuin (MSSL),
J. Mao (INAF-OAB), P. T. O'Brien (U Leicester),
K. L. Page (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), B. Sbarufatti (INAF-IASFPA),
R. L. C. Starling (U Leicester), D. E. Vanden Berk (PSU) and
H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team:
At 07:27:01 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080604 (trigger=313116). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 236.970, +20.555 which is
RA(J2000) = 15h 47m 53s
Dec(J2000) = +20d 33' 19"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a broad single peak
structure with a duration of about 70 sec. The peak count rate
was ~300 counts/sec (15-350 keV), at ~10 sec after the trigger.
The XRT began observing the field at 07:29:00.4 UT, 119.3 seconds after
the BAT trigger. XRT found a bright, uncatalogued X-ray source located
at RA, Dec 236.9648, +20.5572 which is equivalent to:
RA(J2000) = 15h 47m 51.5s
Dec(J2000) = +20d 33' 25.9"
with an uncertainty of 5.4 arcseconds (radius, 90% containment). This
location is 19 arcseconds from the BAT onboard position, within the BAT
error circle. No event data are yet available to determine the column
density using X-ray spectroscopy.
- + Read more
- June 3, 2008 GRB080603b
TITLE: GCN CIRCULAR
NUMBER: 7794
SUBJECT: GRB 080603B: Swift detection of a burst with optical afterglow
DATE: 08/06/03 19:59:18 GMT
FROM: Scott Barthelmy at NASA/GSFC
V. Mangano (INAF-IASFPA), S. D. Barthelmy (GSFC),
A. P. Beardmore (U Leicester), P. J. Brown (PSU),
G. Cusumano (INAF-IASFPA), N. Gehrels (NASA/GSFC),
C. Guidorzi (INAF-OAB), S. T. Holland (CRESST/USRA/GSFC),
J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA),
N. P. M. Kuin (MSSL), C. B. Markwardt (CRESST/GSFC/UMD),
F. E. Marshall (NASA/GSFC), K. M. McLean (GSFC/UMD),
P. T. O'Brien (U Leicester), C. Pagani (PSU), D. M. Palmer (LANL),
A. M. Parsons (GSFC), J. L. Racusin (PSU), T. Sakamoto (NASA/UMBC),
B. Sbarufatti (INAF-IASFPA), M. Stamatikos (NASA/ORAU),
T. N. Ukwatta (GSFC/GWU), D. E. Vanden Berk (PSU) and
H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team:
At 19:38:13 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080603B (trigger=313087). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 176.528, +68.076 which is
RA(J2000) = 11h 46m 07s
Dec(J2000) = +68d 04' 33"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows three main peaks
with a duration of about 70 sec. The peak count rate
was ~8000 counts/sec (15-350 keV), at ~2 sec after the trigger.
- + Read more
- June 2, 2008 GRB080602
TITLE: GCN CIRCULAR
NUMBER: 7781
SUBJECT: GRB 080602: Swift detection of a burst
DATE: 08/06/02 01:41:09 GMT
FROM: David Palmer at LANL
A. P. Beardmore (U Leicester), S. D. Barthelmy (GSFC),
J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC),
S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU),
J. A. Kennea (PSU), C. B. Markwardt (CRESST/GSFC/UMD),
F. E. Marshall (NASA/GSFC), K. M. McLean (GSFC/UMD),
K. L. Page (U Leicester), D. M. Palmer (LANL) and
T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 01:30:28 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080602 (trigger=312958). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 19.173, -9.251 which is
RA(J2000) = 01h 16m 41s
Dec(J2000) = -09d 15' 02"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed two well-separated
peaks with a total duration of about 70 sec. The peak count rate
was ~3000 counts/sec (15-350 keV), at ~60 sec after the trigger.
- + Read more
- May 24, 2008 GRB080524
TITLE: GCN CIRCULAR
NUMBER: 7774
SUBJECT: GRB 080524: Swift-BAT detection of a burst in ground analysis
DATE: 08/05/25 19:41:39 GMT
FROM: Jay R. Cummings at NASA/GSFC/Swift
G. Sato (GSFC/ISAS), L. Barbier (GSFC), S. Barthelmy (GSFC),
W. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC),
E. Fenimore (LANL), N. Gehrels (GSFC), D. Grupe (PSU),
D. Hullinger (BYU-Idaho), H. Krimm (GSFC/USRA), M. Koss (GSFC/UMD),
C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC),
T. Sakamoto (GSFC/ORAU), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC),
on behalf of the Swift-BAT team:
At 04:13:00 UT on May 24, 2008, BAT triggered on GRB 080524. The onboard
processing found a source that was not significant enough to initiate a
burst response. Routine processing on the ground of failed triggers found
a significant source (9.7 sigma) at RA, Dec 268.449, +80.143 which is:
RA 17h 53m 47.7s (J2000)
Dec 80d 8m 35s (J2000)
with an uncertainty radius of 2.5 arcmin (90% containment). The source
was 58% coded.
- + Read more
- May 23, 2008 GRB080523
TITLE: GCN CIRCULAR
NUMBER: 7767
SUBJECT: GRB 080523: Swift detection of a burst
DATE: 08/05/23 21:34:28 GMT
FROM: David Palmer at LANL
M. C. Stroh (PSU), S. D. Barthelmy (GSFC),
W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester),
C. Gronwall (PSU), D. Grupe (PSU), S. T. Holland (CRESST/USRA/GSFC),
H. A. Krimm (CRESST/GSFC/USRA), V. Mangano (INAF-IASFPA),
P. T. O'Brien (U Leicester), D. M. Palmer (LANL),
D. Perez (U Leicester), J. L. Racusin (PSU),
M. Stamatikos (NASA/ORAU), T. N. Ukwatta (GSFC/GWU) and
D. E. Vanden Berk (PSU) report on behalf of the Swift Team:
At 21:21:51 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080523 (trigger=312242). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 20.732, -64.053 which is
RA(J2000) = 01h 22m 56s
Dec(J2000) = -64d 03' 12"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows a single peak
with a duration of about 15 sec. The peak count rate
was ~700 counts/sec (15-350 keV), at ~5 sec after the trigger.
- + Read more
- May 20, 2008 GRB080520
TITLE: GCN CIRCULAR
NUMBER: 7753
SUBJECT: GRB 080520: Swift detection of a burst with optical afterglow
DATE: 08/05/20 22:49:07 GMT
FROM: David Palmer at LANL
D. Grupe (PSU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),
A. P. Beardmore (U Leicester), J. R. Cummings (NASA/UMBC),
C. Gronwall (PSU), S. T. Holland (CRESST/USRA/GSFC),
J. A. Kennea (PSU), V. Mangano (INAF-IASFPA),
K. M. McLean (GSFC/UMD), J. P. Osborne (U Leicester),
D. M. Palmer (LANL), D. Perez (U Leicester), T. Sakamoto (NASA/UMBC),
M. Stamatikos (NASA/ORAU), M. C. Stroh (PSU) and
T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 22:20:24 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080520 (trigger=312047). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 280.192, -55.004 which is
RA(J2000) = 18h 40m 46s
Dec(J2000) = -55d 00' 13"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows two peaks
with a duration of about 15 sec. The peak count rate
was ~700 counts/sec (15-350 keV), at ~2 sec after the trigger.
- + Read more
- May 17, 2008 GRB080517
TITLE: GCN CIRCULAR
NUMBER: 7742
SUBJECT: GRB 080517: Swift detection of a burst
DATE: 08/05/17 21:51:51 GMT
FROM: David Burrows at PSU/Swift
A. M. Parsons (GSFC), A. P. Beardmore (U Leicester),
D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC),
P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC),
S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU),
C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC),
P. T. O'Brien (U Leicester), K. L. Page (U Leicester),
D. M. Palmer (LANL) and E. Troja (U Leicester/INAF-IASFPA) report on
behalf of the Swift Team:
At 21:22:51 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080517 (trigger=311874). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 102.255, +50.731 which is
RA(J2000) = 06h 49m 01s
Dec(J2000) = +50d 43' 51"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single-peaked
structure with a duration of about 20 sec. The peak count rate
was ~500 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- May 16, 2008 GRB080516
TITLE: GCN CIRCULAR
NUMBER: 7733
SUBJECT: GRB 080516: Swift detection of a burst
DATE: 08/05/16 00:47:29 GMT
FROM: David Burrows at PSU/Swift
S. T. Holland (CRESST/USRA/GSFC), S. D. Barthelmy (GSFC),
D. N. Burrows (PSU), E. A. Hoversten (PSU), J. A. Kennea (PSU),
H. A. Krimm (CRESST/GSFC/USRA), F. E. Marshall (NASA/GSFC),
K. L. Page (U Leicester), D. M. Palmer (LANL),
M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester) and
E. Troja (U Leicester/INAF-IASFPA) report on behalf of the Swift
Team:
At 00:17:07 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080516 (trigger=311762). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 120.629, -26.176 which is
RA(J2000) = 08h 02m 31s
Dec(J2000) = -26d 10' 33"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a multi-peaked
structure with a duration of about 20 sec. The peak count rate
was ~2500 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- May 15, 2008 GRB080515
TITLE: GCN CIRCULAR
NUMBER: 7721
SUBJECT: GRB 080515: Swift detection of a burst
DATE: 08/05/15 06:19:28 GMT
FROM: David Palmer at LANL
S. T. Holland (CRESST/USRA/GSFC), A. P. Beardmore (U Leicester),
P. A. Evans (U Leicester), E. A. Hoversten (PSU),
H. A. Krimm (CRESST/GSFC/USRA), C. B. Markwardt (CRESST/GSFC/UMD),
P. T. O'Brien (U Leicester), K. L. Page (U Leicester),
D. M. Palmer (LANL) and R. L. C. Starling (U Leicester) report on
behalf of the Swift Team:
At 06:01:13 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080515 (trigger=311658). Swift could not slew to the burst
due to Sun constraint. The BAT on-board calculated location is
RA, Dec 3.150, +32.599 which is
RA(J2000) = 00h 12m 36s
Dec(J2000) = +32d 35' 57"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve from TDRSS was
truncated by the beginning of a Malindi downlink and
is further complicated as we were coming out of the SAA at the time, but
shows activity from the trigger time to the end of available data
at T+8s, with a peak count rate of ~500 counts/s (15-350 keV).
- + Read more
- May 6, 2008 GRB080506
TITLE: GCN CIRCULAR
NUMBER: 7685
SUBJECT: GRB 080506: Swift detection of a burst with optical afterglow
DATE: 08/05/06 18:06:27 GMT
FROM: Wayne Baumgartner at GSFC
W. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU),
M. M. Chester (PSU), G. Cusumano (INAF-IASFPA),
P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC),
C. Guidorzi (INAF-OAB), S. T. Holland (CRESST/USRA/GSFC),
S. Immler (CRESST/GSFC/UMD), J. A. Kennea (PSU),
V. La Parola (INAF-IASFPA), V. Mangano (INAF-IASFPA),
F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester),
C. Pagani (PSU), P. Romano (INAF-IASFPA), T. Sakamoto (NASA/UMBC),
M. Stamatikos (NASA/ORAU), T. N. Ukwatta (GSFC/GWU) and
H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team:
At 17:46:21 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080506 (trigger=311159). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 329.435, +39.002 which is
RA(J2000) = 21h 57m 44s
Dec(J2000) = +39d 00' 08"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). As this is an image trigger, the BAT light curve does
not show meaningful emission from the burst.
- + Read more
- May 3, 2008 GRB080503
TITLE: GCN CIRCULAR
NUMBER: 7665
SUBJECT: GRB 080503: Swift detection of a short burst
DATE: 08/05/03 12:50:13 GMT
FROM: David Burrows at PSU/Swift
J. Mao (INAF-OAB), W. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU),
M. M. Chester (PSU), N. Gehrels (NASA/GSFC), C. Guidorzi (INAF-OAB),
S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU),
C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC),
P. T. O'Brien (U Leicester), D. M. Palmer (LANL),
P. Romano (INAF-IASFPA), T. N. Ukwatta (GSFC/GWU) and
D. E. Vanden Berk (PSU) report on behalf of the Swift Team:
At 12:26:13 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080503 (trigger=310785). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 286.617, +68.778 which is
RA(J2000) = 19h 06m 28s
Dec(J2000) = +68d 46' 41"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single spike
structure with a duration of about 0.5 sec, although there may
be further activity during the slew. The peak count rate
was ~6500 counts/sec (15-350 keV), at ~0.1 sec after the trigger.
- + Read more
- April 30, 2008 GRB080430
TITLE: GCN CIRCULAR
NUMBER: 7647
SUBJECT: GRB 080430: Swift detection of a burst with optical afterglow
DATE: 08/04/30 20:16:10 GMT
FROM: Scott Barthelmy at NASA/GSFC
C. Guidorzi (INAF-OAB), S. D. Barthelmy (GSFC),
A. P. Beardmore (U Leicester), D. N. Burrows (PSU),
J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC),
O. Godet (U Leicester), S. T. Holland (CRESST/USRA/GSFC),
J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA),
W.L Landsman (GSFC), C. B. Markwardt (CRESST/GSFC/UMD),
K. M. McLean (GSFC/UMD), P. T. O'Brien (U Leicester),
D. M. Palmer (LANL), D. Perez (U Leicester), P. Romano (INAF-IASFPA),
T. Sakamoto (NASA/UMBC), M. Stamatikos (NASA/ORAU),
R. L. C. Starling (U Leicester), G. Tagliaferri (INAF-OAB),
T. N. Ukwatta (GSFC/GWU), D. E. Vanden Berk (PSU) and
H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team:
At 19:53:02 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080430 (trigger=310613). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 165.322, +51.689 which is
RA(J2000) = 11h 01m 17s
Dec(J2000) = +51d 41' 22"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single FRED peak
structure with a duration of about 20 sec. The peak count rate
was ~6000 counts/sec (15-350 keV), at ~1 sec after the trigger.
- + Read more
- April 26, 2008 GRB080426
TITLE: GCN CIRCULAR
NUMBER: 7639
SUBJECT: GRB 080426: Swift detection of a possibly short burst
DATE: 08/04/26 13:49:12 GMT
FROM: David Burrows at PSU/Swift
H. Ziaeepour (UCL-MSSL), S. D. Barthelmy (GSFC),
W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester),
D. N. Burrows (PSU), N. Gehrels (NASA/GSFC), C. Guidorzi (INAF-OAB),
S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU),
N. P. M. Kuin (MSSL), J. Mao (INAF-OAB),
C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC),
P. T. O'Brien (U Leicester), S. R. Oates (UCL-MSSL), C. Pagani (PSU),
D. M. Palmer (LANL), D. Perez (U Leicester),
R. L. C. Starling (U Leicester), G. Tagliaferri (INAF-OAB),
T. N. Ukwatta (GSFC/GWU) and P. A. Ward (MSSL-UCL) report on behalf
of the Swift Team:
At 13:23:22 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080426 (trigger=310219). Swift slewed to the burst
after a brief delay due to Earth limb constraint.
The BAT on-board calculated location is
RA, Dec 26.574, +69.492 which is
RA(J2000) = 01h 46m 18s
Dec(J2000) = +69d 29' 30"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single-peaked
structure with a duration of about 2 sec. The peak count rate
was ~7500 counts/sec (15-350 keV), at ~0 sec after the trigger.
- + Read more
- April 13, 2008 GRB080413b
TITLE: GCN CIRCULAR
NUMBER: 7598
SUBJECT: GRB 080413B: Swift detection of a possibly short burst with optical counterpart
DATE: 08/04/13 09:20:28 GMT
FROM: David Palmer at LANL
M. Stamatikos (NASA/ORAU), A. P. Beardmore (U Leicester),
N. Gehrels (NASA/GSFC), S. D. Hunsberger (PSU),
C. B. Markwardt (CRESST/GSFC/UMD), J. P. Osborne (U Leicester),
K. L. Page (U Leicester), D. M. Palmer (LANL),
T. Sakamoto (NASA/UMBC), R. L. C. Starling (U Leicester) and
E. Troja (U Leicester/INAF-IASFPA) report on behalf of the Swift
Team:
At 08:51:12 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080413B (trigger=309111). Swift started slewing approximately
70 seconds after the burst. The BAT on-board calculated location is
RA, Dec 326.134, -19.969 which is
RA(J2000) = 21h 44m 32s
Dec(J2000) = -19d 58' 08"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single peaked
structure with a duration of about 3 sec. The peak count rate
was ~15,000 counts/sec (15-350 keV), at ~0.2 sec after the trigger.
- + Read more
- April 13, 2008 GRB080413a
TITLE: GCN CIRCULAR
NUMBER: 7594
SUBJECT: GRB 080413: Swift detection of a burst with an optical afterglow
DATE: 08/04/13 03:06:53 GMT
FROM: David Palmer at LANL
A. P. Beardmore (U Leicester), D. N. Burrows (PSU),
P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC),
S. T. Holland (CRESST/USRA/GSFC), S. D. Hunsberger (PSU),
J. A. Kennea (PSU), C. B. Markwardt (CRESST/GSFC/UMD),
K. L. Page (U Leicester), D. M. Palmer (LANL),
T. Sakamoto (NASA/UMBC), M. Stamatikos (NASA/ORAU) and
E. Troja (U Leicester/INAF-IASFPA) report on behalf of the Swift
Team:
At 02:54:19 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080413 (trigger=309096). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 287.290, -27.679 which is
RA(J2000) = 19h 09m 10s
Dec(J2000) = -27d 40' 44"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a triple-peaked
structure with a duration of about 55 sec. The peak count rate
was ~10000 counts/sec (15-350 keV), at ~1 sec after the trigger.
- + Read more
- April 11, 2008 GRB080411
TITLE: GCN CIRCULAR
NUMBER: 7584
SUBJECT: GRB 080411: Swift detection of a bright burst
DATE: 08/04/11 21:47:27 GMT
FROM: Scott Barthelmy at NASA/GSFC
F. E. Marshall (NASA/GSFC), S. D. Barthelmy (GSFC),
W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester),
D. N. Burrows (PSU), N. Gehrels (NASA/GSFC), O. Godet (U Leicester),
S. T. Holland (CRESST/USRA/GSFC), H. A. Krimm (CRESST/GSFC/USRA),
C. B. Markwardt (CRESST/GSFC/UMD), K. M. McLean (GSFC/UMD),
C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL),
M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester),
T. N. Ukwatta (GSFC/GWU), L. Vetere (PSU) and P. A. Ward (MSSL-UCL)
report on behalf of the Swift Team:
At 21:15:32 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080411 (trigger=309010). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 38.018, -71.342 which is
RA(J2000) = 02h 32m 04s
Dec(J2000) = -71d 20' 30"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The TDRSS BAT lightcurve shows the burst
starting with a fast rise from background to ~13,000 counts/sec in
approximately 0.5 sec. There are several peaks after that with the
fourth peak (T+19 sec) at 75,000 cnts/sec. There are several more peaks
after that lasting out to at least T+70 sec.
- + Read more
- April 9, 2008 GRB080409
TITLE: GCN CIRCULAR
NUMBER: 7573
SUBJECT: GRB 080409: Swift detection of a burst
DATE: 08/04/09 01:46:36 GMT
FROM: David Palmer at LANL
S. T. Holland (CRESST/USRA/GSFC), W. H. Baumgartner (GSFC/UMBC),
D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), J. A. Kennea (PSU),
C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC),
K. M. McLean (GSFC/UMD), K. L. Page (U Leicester),
D. M. Palmer (LANL), R. L. C. Starling (U Leicester) and
T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 01:22:57 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 080409 (trigger=308812). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 84.333, +5.085 which is
RA(J2000) = 05h 37m 20s
Dec(J2000) = +05d 05' 07"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a double-peaked
structure with a duration of about 10 sec. The peak count rate
was ~5000 counts/sec (15-350 keV), at ~0.7 sec after the trigger.
- + Read more
- April 5, 2008 GRB080405
TITLE: GCN CIRCULAR
NUMBER: 7566
SUBJECT: GRB 080405: Swift-BAT refined analysis
DATE: 08/04/07 14:25:11 GMT
FROM: Jay R. Cummings at NASA/GSFC/Swift
T. Sakamoto (GSFC/ORAU), L. Barbier (GSFC), S. Barthelmy (GSFC),
J. Cummings (GSFC/UMBC), M. Stamatikos (GSFC/ORAU), T. Ukwatta (GWU),
K. McLean (GSFC/UMD), W. Baumgartner (GSFC/UMBC), E. Fenimore (LANL),
H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL),
G. Sato (GSFC/ISAS), J. Tueller (GSFC)
(i. e. the Swift-BAT team)
We report further results on GRB 080405 (Cummings et al. GCN circ
#7564) based on the BAT event data from T-1.3 to T+8.7 seconds.
This interval covers only about the first fifth of the event, and
not the interval of peak flux.
The best BAT position remains the same: RA, Dec 162.597, -4.250 deg
which is:
RA(J2000) = 10h 50m 23.3s,
Dec(J2000) = -4d 15' 00" (J2000)
with an uncertainty of 2.0 arcmin (radius, sys+stat, 90% containment).
- + Read more
- Older Bursts
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